The pre-stranded wire is the connection fixture on the extra high voltage overhead line,which can transfer mechanical load and electrical load and protect the cable.The difficulty of manufacturing pre-stranded wire is that the forming tension is not constant,which affects the dimensional accuracy of pre-stranded wire,reducing the fit of the fixture and cable,aggravating the wear and looseness,and affecting the electrical performance.Based on the pre-stranded wire forming process,the forming tension was studied,the forming conditions were analyzed,and the tension control mechanism and system were designed.A fuzzy neural network algorithm was used to control the tension,and a new pre-stranded wire forming equipment was developed and tested.The test results meet the control specifications,and the performance of the equipment meets the production requirements.